Dodge ZB 2005 Service Manual page 1155

DRIVEABILITY - GAS
P0111-INTAKE AIR TEMP PERFORMANCE —
TEST
3 Turn the ignition off.
Connect a jumper wire across the IAT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the IAT voltage.
Is the voltage below 1.0 volt?
Yes → Replace the Intake Air Temperature Sensor.
→ Go To 4
No
NOTE: Remove the jumper wire and connect the Sensor harness connector
before continuing.
4 Turn the ignition off.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Backprobe the (K21) IAT Sensor Signal circuit at the IAT Sensor harness connector
and PCM harness connector with the voltmeter leads.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
Yes → Go To 6
→ Repair the excessive resistance in the (K21) IAT Sensor Signal
No
5 Turn the ignition off.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Backprobe the (K900) Sensor ground circuit at the IAT Sensor harness connector and
PCM harness connector with both leads of a voltmeter.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
Yes → Go To 6
→ Repair the excessive resistance in the (K900) Sensor ground
No
NOTE: Turn the ignition off before continuing.
6 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
34
APPLICABILITY
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All
All
All